FLENDER Fear Units for Agitators


Agitators and agitator tanks are used in chemical, pharmaceutical, cosmetic, and food processing applications. The diversity of the application requirements and the media employed necessitate customized plant designs.

The gear unit is normally vertically mounted to the agitator tank. In addition to transmitting torque, it also absorbs the axial and radial loads that occur as a result of the application's specification. FLENDER gear units for agitator drives have a reinforced output shaft and rolling-contact bearings for this purpose.

Sometimes the axial loads to be absorbed are higher still. In this case, Siemens can supply FLENDER gear unit solutions with an additional thrust bearing.

Technical data


Helical and bevel helical gear unit



Gear stages

1- to 4-stage

Power ratings

up to 4,000 kW

Transmission ratios

i = 1 to 450

Nominal torques

up to 240,000 Nm

Mounting positions



  • High operational reliability

  • Reinforced bearings

  • Optional, force-free gear housing thanks to additional thrust bearing

  • Customized versions possible, special flange on the output side for mounting to the agitator

  • Extra-strong output shafts (solid- or hollow-shaft design)

  • Output bearing arrangement with additional, bidirectional thrust bearings


  • Chemical, pharmaceutical, cosmetic, and food processing industries